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. 2013 Apr 8;8(4):e61138. doi: 10.1371/journal.pone.0061138

Figure 2. The PCR products from the gastrointestinal contents of laying hens fed diets containing control corn (CC) and phytase transgenic corn (PTC) for 16 weeks.

Figure 2

(a) The endogenous gene (226 bp) of corn for ivr (left), (b) The exogenous gene (678 bp) of PTC for phyA2 (right). Arrows indicate the expected length of PCR products. M = marker; lanes 1 to 8 CC-fed laying hens (control); lanes 9 to 16 = PTC-fed laying hens; + = positive (GM corn), and − = negative control (no DNA). C = crop contents, G = gizzard contents, D = duodenal contents, J = jejunum contents, I = ileum contents, CE = cecal contents, and R = rectal contents.